Journal
ACTA MATERIALIA
Volume 53, Issue 3, Pages 637-645Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2004.10.017
Keywords
friction stirring; orientation imaging microscopy; stainless steel; recrystallization
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The recrystallization phenomenon during friction stirring (FS) of type 304L stainless steel was examined by orientation imaging microscopy. In the stir zone, a (1 0 0) fiber texture component containing a dominant orientation was observed from the center to side. Most grains having this dominant (1 0 0) fiber texture component contained a high density of dislocations; in the the as-processed condition. Post-processed heat treatment (HT) resulted in grain growth. twinning and a change in texture component in most grains having this 1 0 0) fiber component. Grains having a different orientation (ban the (10 0) fiber component. experienced grain growth and twinning without rotation of orientation during HT. From these results. it was deduced that friction stir processed 304L stainless steel partially underwent static recrystallization following dynamic recrystallization during FS. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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